气体爆炸抑制技术研究

本文根据气体爆炸反应的链式反应理论 ,考虑其从点火到爆炸需要一定的成长时间 (秒级 ) ,设计安装了一套气体爆炸抑爆实验装置。在此装置中 ,用复合爆炸抑制系统 ,对液化石油气和甲醇裂解气 (主成份为 co)进行了抑爆效果实验 ,研究了干粉剂用量、干粉分散均匀度和抑爆系统干粉喷散作动时间对抑爆效果的影响 ,给出了抑爆过程的压力—时间曲线。实验结果表明 :本文所提供的抑爆技术是可行的。通过及时喷洒一定量的灭火干粉 (或水 ) ,可使石油液化气爆炸峰值压力下降 59.5% ,可使甲醇裂解气爆炸峰值压力下降 43.6% ,并最终导致燃爆熄灭。

A STUDY ON THE SUPPRESSION OF GAS-EXPLOSION HAZARDS

A gas explosion suppression testing system is developed in consideration of the chain reaction mechanism and a growing time from ignition to explosion for gas explosion The effects of quantity and dispersion uniformity of powder suppressing agent, actuating time of the system on the explosion suppression upon liquefied petroleum gas and methanol pyrolysis gas are studied using the multiple gas explosion suppression system Pressure time curves in the suppression process are given It is shown that the explosion suppression system presented is effective for the combustible gases The peak pressures of explosion from liquefied petroleum gas and methanol pyrolysis gas can be decreased by 59 5% and 43 6% respectively and finally extinguished